Vulnerability-Lookup

CVE-2026-86227 (GCVE-0-2026-86227)

Vulnerability from cvelistv5 – Published: 2026-09-06 22:15 – Updated: 2026-09-09 14:04 X_Open Source

Title

valkey-io valkey kvstore.c kvstoreGetHashtable out-of-bounds

Summary

A weakness has been identified in valkey-io valkey up to 9.0.5/9.1.1. This affects the function kvstoreGetHashtable of the file src/kvstore.c. This manipulation of the argument didx causes out-of-bounds read. It is possible to initiate the attack remotely. The attack is considered to have high complexity. It is indicated that the exploitability is difficult. The exploit has been made available to the public and could be used for attacks. Patch name: 4691888e7fab3df128f0bde5750c9fde2ae552fa. To fix this issue, it is recommended to deploy a patch. Exploitation requires cluster mode plus attacker-controlled dump.rdb at startup (data-dir write access, replication feed, or a stored crafted RDB) - an attacker-position DoS at boot, not network pre-auth. The issue report was closed stating it "is worth fixing for the sake of memory safety… but I don't think it meets our bar for a security disclosure."

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

3.1 (Low)


                        
                          CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-09 14:04 UTC

CWE

CWE-125 - Out-of-Bounds Read
CWE-119 - Memory Corruption

Assigner

VulDB CNA under the mitre root

CNA scorecard B 82/100 over 3964 records in the last 180 days details

References

9 references

URL	Tags
https://vuldb.com/vuln/399380	vdb-entrytechnical-description
https://vuldb.com/vuln/399380/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86227	third-party-advisory
https://vuldb.com/submit/897659	third-party-advisory
https://github.com/valkey-io/valkey/issues/4222	issue-tracking
https://github.com/valkey-io/valkey/pull/4229	issue-trackingpatch
https://github.com/user-attachments/files/3019553…	exploit
https://github.com/valkey-io/valkey/commit/469188…	patch
https://github.com/valkey-io/valkey/	product

Impacted products

1 product

Vendor	Product	Version	CPE status
valkey-io	valkey	Affected: 9.0.0 Affected: 9.0.1 Affected: 9.0.2 Affected: 9.0.3 Affected: 9.0.4 Affected: 9.0.5 Affected: 9.1.0 Affected: 9.1.1 cpe:2.3:a:valkey-io:valkey::::::::

Credits

VULL (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
                "version": "3.1"
              }
            },
            {
              "cvssV3_0": {
                "baseScore": 3.1,
                "baseSeverity": "LOW",
                "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
                "version": "3.0"
              }
            },
            {
              "cvssV2_0": {
                "baseScore": 2.1,
                "vectorString": "AV:N/AC:H/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
                "version": "2.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-125",
                  "description": "Out-of-Bounds Read",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-119",
                  "description": "Memory Corruption",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-06T22:15:13.103Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-399380 | valkey-io valkey kvstore.c kvstoreGetHashtable out-of-bounds",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/vuln/399380"
            },
            {
              "name": "VDB-399380 | CTI Indicators (IOB, IOC, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/vuln/399380/cti"
            },
            {
              "name": "CVE-2026-86227 | CVE Analysis and Report",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/cve/CVE-2026-86227"
            },
            {
              "name": "Submit #897659 | Valkey Project Valkey 9.1.0 Out-of-Bounds Read",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/submit/897659"
            },
            {
              "tags": [
                "issue-tracking"
              ],
              "url": "https://github.com/valkey-io/valkey/issues/4222"
            },
            {
              "tags": [
                "issue-tracking",
                "patch"
              ],
              "url": "https://github.com/valkey-io/valkey/pull/4229"
            },
            {
              "tags": [
                "exploit"
              ],
              "url": "https://github.com/user-attachments/files/30195539/RDB.zip"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/valkey-io/valkey/commit/4691888e7fab3df128f0bde5750c9fde2ae552fa"
            },
            {
              "tags": [
                "product"
              ],
              "url": "https://github.com/valkey-io/valkey/"
            }
          ],
          "tags": [
            "x_open-source"
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-09-06T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2026-09-06T02:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2026-09-06T06:13:02.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "valkey-io valkey kvstore.c kvstoreGetHashtable out-of-bounds",
          "x_generator": [
            "VulDB PVTS v202609"
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2026-86227",
        "datePublished": "2026-09-06T22:15:13.103Z",
        "dateReserved": "2026-09-06T04:07:49.539Z",
        "dateUpdated": "2026-09-09T14:04:18.510Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-86227

Vulnerability from fkie_nvd - Published: 2026-09-06 23:17 - Updated: 2026-09-09 15:17

Severity

3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/user-attachments/files/30195539/RDB.zip
	cna@vuldb.com	https://github.com/valkey-io/valkey/
	cna@vuldb.com	https://github.com/valkey-io/valkey/commit/4691888e7fab3df128f0bde5750c9fde2ae552fa
	cna@vuldb.com	https://github.com/valkey-io/valkey/issues/4222
	cna@vuldb.com	https://github.com/valkey-io/valkey/pull/4229
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-86227
	cna@vuldb.com	https://vuldb.com/submit/897659
	cna@vuldb.com	https://vuldb.com/vuln/399380
	cna@vuldb.com	https://vuldb.com/vuln/399380/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:valkey-io:valkey:*:*:*:*:*:*:*:*"
          ],
          "product": "valkey",
          "vendor": "valkey-io",
          "versions": [
            {
              "status": "affected",
              "version": "9.0.0"
            },
            {
              "status": "affected",
              "version": "9.0.1"
            },
            {
              "status": "affected",
              "version": "9.0.2"
            },
            {
              "status": "affected",
              "version": "9.0.3"
            },
            {
              "status": "affected",
              "version": "9.0.4"
            },
            {
              "status": "affected",
              "version": "9.0.5"
            },
            {
              "status": "affected",
              "version": "9.1.0"
            },
            {
              "status": "affected",
              "version": "9.1.1"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A weakness has been identified in valkey-io valkey up to 9.0.5/9.1.1. This affects the function kvstoreGetHashtable of the file src/kvstore.c. This manipulation of the argument didx causes out-of-bounds read. It is possible to initiate the attack remotely. The attack is considered to have high complexity. It is indicated that the exploitability is difficult. The exploit has been made available to the public and could be used for attacks. Patch name: 4691888e7fab3df128f0bde5750c9fde2ae552fa. To fix this issue, it is recommended to deploy a patch. Exploitation requires cluster mode plus attacker-controlled dump.rdb at startup (data-dir write access, replication feed, or a stored crafted RDB) - an attacker-position DoS at boot, not network pre-auth. The issue report was closed stating it \"is worth fixing for the sake of memory safety\u2026 but I don\u0027t think it meets our bar for a security disclosure.\""
    }
  ],
  "id": "CVE-2026-86227",
  "lastModified": "2026-09-09T15:17:14.810",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "HIGH",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:H/Au:S/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 1.3,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-86227",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-09T14:04:03.609916Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-06T23:17:38.150",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/user-attachments/files/30195539/RDB.zip"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/valkey-io/valkey/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/valkey-io/valkey/commit/4691888e7fab3df128f0bde5750c9fde2ae552fa"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/valkey-io/valkey/issues/4222"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/valkey-io/valkey/pull/4229"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-86227"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/897659"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/399380"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/399380/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-74WM-Q835-HXF9

Vulnerability from github – Published: 2026-09-07 00:30 – Updated: 2026-09-07 00:30

Details

Severity

3.1 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

1.3 (Low)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-86227"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-06T23:17:38Z",
    "severity": "LOW"
  },
  "details": "A weakness has been identified in valkey-io valkey up to 9.0.5/9.1.1. This affects the function kvstoreGetHashtable of the file src/kvstore.c. This manipulation of the argument didx causes out-of-bounds read. It is possible to initiate the attack remotely. The attack is considered to have high complexity. It is indicated that the exploitability is difficult. The exploit has been made available to the public and could be used for attacks. Patch name: 4691888e7fab3df128f0bde5750c9fde2ae552fa. To fix this issue, it is recommended to deploy a patch. Exploitation requires cluster mode plus attacker-controlled dump.rdb at startup (data-dir write access, replication feed, or a stored crafted RDB) - an attacker-position DoS at boot, not network pre-auth. The issue report was closed stating it \"is worth fixing for the sake of memory safety\u2026 but I don\u0027t think it meets our bar for a security disclosure.\"",
  "id": "GHSA-74wm-q835-hxf9",
  "modified": "2026-09-07T00:30:19Z",
  "published": "2026-09-07T00:30:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86227"
    },
    {
      "type": "WEB",
      "url": "https://github.com/valkey-io/valkey/issues/4222"
    },
    {
      "type": "WEB",
      "url": "https://github.com/valkey-io/valkey/pull/4229"
    },
    {
      "type": "WEB",
      "url": "https://github.com/valkey-io/valkey/commit/4691888e7fab3df128f0bde5750c9fde2ae552fa"
    },
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/30195539/RDB.zip"
    },
    {
      "type": "WEB",
      "url": "https://github.com/valkey-io/valkey"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-86227"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/897659"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/399380"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/399380/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

OPENSUSE-SU-2026:11809-1

Vulnerability from csaf_opensuse - Published: 2026-09-17 00:00 - Updated: 2026-09-18 09:18

Summary

valkey-9.1.2-2.1 on GA media

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2026-86227.

CVE-2026-86227

6.5 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Recommended: 12 products

Open the full advisory

RHSA-2026:61884

Vulnerability from csaf_redhat - Published: 2026-09-01 05:42 - Updated: 2026-10-20 18:55

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Important

Scope

6 vulnerabilities in this advisory, including CVE-2026-86227.

CVE-2026-86227

A flaw was found in Valkey. An out-of-bounds read vulnerability exists in the `kvstoreGetHashtable` function within `src/kvstore.c`. This issue can be exploited by a remote attacker in cluster mode by providing a specially crafted `dump.rdb` file during application startup, for example, through data directory write access or a malicious replication feed. Successful exploitation could lead to a Denial of Service (DoS) during the application's boot process.

3.1 (Low)


                
                  CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Fixed: 13 products

https://access.redhat.com/errata/RHSA-2026:61884

Open the full advisory

UBUNTU-CVE-2026-86227 (CVE-2026-86227)

Vulnerability from osv_ubuntu – Published: 2026-09-06 23:17 – Updated: 2026-10-17 09:54 – Source website

Details

Severity

3.1 (Low)


                    
                      CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

1.3 (Low)


                    
                      CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-86227	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-86227	REPORT
	https://github.com/valkey-io/valkey/issues/4222	REPORT
	https://github.com/valkey-io/valkey/pull/4229	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "valkey-redis-compat",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@7.2.13+dfsg1-0ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.2.5+dfsg1-2ubuntu4~24.04.1",
        "7.2.7+dfsg1-0ubuntu0.24.04.1",
        "7.2.8+dfsg1-0ubuntu0.24.04.1",
        "7.2.8+dfsg1-0ubuntu0.24.04.2",
        "7.2.8+dfsg1-0ubuntu0.24.04.3",
        "7.2.10+dfsg1-0ubuntu0.1",
        "7.2.11+dfsg1-0ubuntu0.1",
        "7.2.11+dfsg1-0ubuntu0.2",
        "7.2.12+dfsg1-0ubuntu0.1",
        "7.2.13+dfsg1-0ubuntu0.1",
        "7.2.13+dfsg1-0ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "9.1.2-0ubuntu1"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "9.1.2-0ubuntu1"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "9.1.2-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@9.1.2-0ubuntu1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.0.3-0ubuntu2",
        "9.0.4-0ubuntu1",
        "9.1.1-0ubuntu2",
        "9.1.2-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "9.0.4-0ubuntu0.2"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "9.0.4-0ubuntu0.2"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "9.0.4-0ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@9.0.4-0ubuntu0.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.3+dfsg1-0ubuntu2",
        "8.1.4+dfsg1-0ubuntu1",
        "9.0.2-0ubuntu1",
        "9.0.3-0ubuntu1",
        "9.0.3-0ubuntu2",
        "9.0.4-0ubuntu0.1",
        "9.0.4-0ubuntu0.2"
      ]
    }
  ],
  "aliases": [],
  "details": "A weakness has been identified in valkey-io valkey up to 9.0.5/9.1.1. This affects the function kvstoreGetHashtable of the file src/kvstore.c. This manipulation of the argument didx causes out-of-bounds read. It is possible to initiate the attack remotely. The attack is considered to have high complexity. It is indicated that the exploitability is difficult. The exploit has been made available to the public and could be used for attacks. Patch name: 4691888e7fab3df128f0bde5750c9fde2ae552fa. To fix this issue, it is recommended to deploy a patch. Exploitation requires cluster mode plus attacker-controlled dump.rdb at startup (data-dir write access, replication feed, or a stored crafted RDB) - an attacker-position DoS at boot, not network pre-auth. The issue report was closed stating it \"is worth fixing for the sake of memory safety\u2026 but I don\u0027t think it meets our bar for a security disclosure.\"",
  "id": "UBUNTU-CVE-2026-86227",
  "modified": "2026-10-17T09:54:14Z",
  "published": "2026-09-06T23:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-86227"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-86227"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/issues/4222"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/pull/4229"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-86227"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-86227 (GCVE-0-2026-86227)

FKIE_CVE-2026-86227

GHSA-74WM-Q835-HXF9

OPENSUSE-SU-2026:11809-1

RHSA-2026:61884

UBUNTU-CVE-2026-86227 (CVE-2026-86227)

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Nomenclature

Vulnerability timeline

Related by attack behaviour